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Source. Theorem 2.7, p. 5, of Anders Johansson, Jeff Kahn and Van Vu, Factors in random graphs, Random Structures Algorithms 33 (2008), no. 1, 1–28, doi:10.1002/rsa.20224. Labels and pages are those of arXiv:0803.3406v1 (24 March 2008), the edition named on the source card.

Read depth. Claims checked: the statement was read clause by clause on the printed page. The paper does not write out the proof; Section 12 (pp. 27–28) says the graph proof carries over. Nothing here is independently reviewed.

Statement

Setting. Hk(n,p)H_k(n,p), thH(n)\mathrm{th}_H(n) and d∗(H)d^*(H), the maximum of d(H′)=e(H′)/(v(H′)−1)d(H')=e(H')/(v(H')-1) over subhypergraphs H′⊆HH'\subseteq H, are as on the pages for Theorem 2.5 and Theorem 2.2; the paper says the graph definitions extend without modification (p. 5).

Theorem 2.7 (p. 5). For an arbitrary kk-uniform hypergraph HH,

thH(n)=O(n−1/d∗(H)+o(1)).\mathrm{th}_H(n)=O\bigl(n^{-1/d^*(H)+o(1)}\bigr).

The paper says (p. 6) that its counting version also holds.

Proof pointer

Not written out. Section 12 (pp. 27–28) combines the two modifications it describes: taking p≥n−1/d∗(H)+ϵp\ge n^{-1/d^*(H)+\epsilon}, as for Theorem 2.2, and noting that the arguments make no use of edges having size two.

Dependencies

None in the corpus. Internal: the proof of Theorem 2.4, transferred as Section 12 describes.

Bears on

No Erdős problem.